Apparatus including heat exchanger and sound attenuator for gas turbine engine
a technology of gas turbine engine and sound attenuator, which is applied in the manufacture of mechanical apparatus, machines/engines, engines, etc., can solve the problems of reducing the service life and reliability of components, reducing the size of fan ducts, and limited space available in fan ducts, so as to facilitate sound attenuation and dissipate heat into the airflow. , the effect of facilitating sound attenuation
Active Publication Date: 2018-08-16
GENERAL ELECTRIC CO
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Benefits of technology
The invention provides an apparatus for reducing noise in a gas turbine engine. It consists of a surface that defines an airflow path and a number of fins that are attached to this surface. The fins are designed to absorb heat from the airflow and also direct the sound waves in the airflow. By arranging the fins at a spacing from each other, the apparatus effectively attenuates the sound waves. This invention can be used in gas turbine engines to improve their performance and comfort.
Problems solved by technology
However, the high energy gas stream increases the temperature of components of the gas turbine engines, which reduces the service life and reliability of the components.
However, the fan duct has a limited amount of space available for the acoustic liner and the heat exchangers.
Moreover, in at least some known gas turbine engines, the fan ducts are reduced in size compared to prior fan ducts and even less space is available for acoustic liners and / or heat exchangers.
Method used
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[0018]In the following specification and the claims, reference will be made to a number of terms, which shall be defined to have the following meanings.
[0019]The singular forms “a”, “an”, and “the” include plural references unless the context clearly dictates otherwise.
[0020]“Optional” or “optionally” means that the subsequently described event or circumstance may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
[0021]Approximating language, as used herein throughout the specification and claims, may be applied to modify any quantitative representation that could permissibly vary without resulting in a change in the basic function to which it is related. Accordingly, a value modified by a term or terms, such as “about”, “approximately”, and “substantially”, are not to be limited to the precise value specified. In at least some instances, the approximating language may correspond to the precision of an instrument for...
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An apparatus for attenuating sound waves in a gas turbine engine includes a surface at least partially defining a pathway for airflow and a plurality of fins extending from the surface. The plurality of fins are configured to dissipate heat into the airflow. Each fin of the plurality of fins includes a fin surface. The fin surface is configured to direct the sound waves between the plurality of fins such that the plurality of fins attenuate the sound waves. The plurality of fins are arranged such that spacing between adjacent fins of the plurality of fins facilitates sound attenuation.
Description
BACKGROUND[0001]The field of the disclosure relates generally to gas turbine engines and, more specifically, to systems and methods for reducing noise and transferring heat in gas turbines using an apparatus including a heat exchanger and a sound attenuator.[0002]During operation of at least some known gas turbine engines, such as turbofans, air is mixed with fuel and ignited to form a high energy gas stream to rotatably drive a turbine. However, the high energy gas stream increases the temperature of components of the gas turbine engines, which reduces the service life and reliability of the components. Accordingly, at least some known gas turbine engines include heat exchangers to control the temperature of the components. For example, in at least some known gas turbine engines, heat exchangers are located within a fan duct of the turbofan engine.[0003]In addition, gas turbine engines generate sound during operation. Accordingly, at least some known gas turbine engines include an ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02C7/24F01D25/24F02K3/06
CPCF02C7/24F05D2260/96F02K3/06F01D25/24F02C7/045F02C7/141F02C7/18F05D2250/232F05D2260/213F05D2260/963F02C7/14F05D2220/36F05D2250/191F05D2250/23F05D2250/314F05D2250/75F05D2260/22141
Inventor PASTOUCHENKO, NIKOLAI N.DIAZ, CARLOS ENRIQUEPALIATH, UMESHJU, HONGBIN
Owner GENERAL ELECTRIC CO